Table 1.

Patient and control characteristics

	MSA-P (n = 13)	PSP (n = 12)	PD (n = 12)	Control (n = 13)	P value
Age at MRI (years)	64 ± 8	70 ± 5	65 ± 8	63 ± 13	0.30*
Male/Female	5/8	6/6	3/9	5/8	0.67**
Disease duration at MRI (years)	3.8 ± 1.2 (1–6)	5.5 ± 3.2 (2–13)	5.3 ± 2.8 (2–10)	NA	0.55**
Hoehn-Yahr stage	3.9 ± 0.9 (3–5)	3.7 ± 0.9 (2–5)	3.3 ± 0.4 (3–4)	NA	0.19**

Data are shown as absolute numbers or the mean ± standard deviation. MRI, magnetic resonance imaging; MSA-P, Parkinsonian variant of multiple system atrophy; NA, not applicable; PD, Parkinson’s disease; PSP, progressive supranuclear palsy;

^*, one-way analysis of variance;

^**, Kruskal-Wallis test.